@putteesinmyhands Sorry about that....been out since 2004 and still talk in TLA's from the old life. @alfred_the_great Thanks for holding the fort and keeping the info flowing. I have only just surfaced from a very enjoyable Xmas @Alowen Without any provenance I would be wary of it being WW1 vintage. Some of the older style cotton flags I used to have buried at the bottom of my V/S store (Visual Signalling Store) in the 80's/90's yellowed very effectively while still in their sealed plastic bag. The newer man made fibre ones stayed whiter longer (until you hoisted them over a bl**dy diesel exhaust pipe that is!). The fact that it appears to have the brass Ingelfield clips and proper fibre rope would make me think it is at least late 90's/early 2000? @Yokel If it was a Flag Alpha or Bravo then you would be correct and it is a Burgee. The Commodores pennant is a broad pennant. In a similar vein to the now defunct ( I believe) Squadron command pennant.
It was one of the questions that was always thrown in to trip up the baby buntings doing their ceremonial exams.
I don't have access to the appropriate BR anymore so cannot give chapter and verse but I think this link goes some way to giving some of the history if you are that way inclined-